Theorem uspgrushgr 29791

Description: A simple pseudograph is an undirected simple hypergraph. (Contributed by AV, 19-Jan-2020.) (Revised by AV, 15-Oct-2020.)

Assertion

Ref	Expression
uspgrushgr	⊢ (𝐺 ∈ USPGraph → 𝐺 ∈ USHGraph)

Proof of Theorem uspgrushgr

Dummy variable 𝑥 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2763	. . . . 5 ⊢ (Vtx‘𝐺) = (Vtx‘𝐺)
2		eqid 2763	. . . . 5 ⊢ (iEdg‘𝐺) = (iEdg‘𝐺)
3	1, 2	isuspgr 29766	. . . 4 ⊢ (𝐺 ∈ USPGraph → (𝐺 ∈ USPGraph ↔ (iEdg‘𝐺):dom (iEdg‘𝐺)⟶1-1{𝑥 ∈ (𝒫 (Vtx‘𝐺) ∖ {∅}) ∣ (♯‘𝑥) ≤ 2}))
4		ssrab2 4008	. . . . 5 ⊢ {𝑥 ∈ (𝒫 (Vtx‘𝐺) ∖ {∅}) ∣ (♯‘𝑥) ≤ 2} ⊆ (𝒫 (Vtx‘𝐺) ∖ {∅})
5		f1ss 6810	. . . . 5 ⊢ (((iEdg‘𝐺):dom (iEdg‘𝐺)⟶1-1{𝑥 ∈ (𝒫 (Vtx‘𝐺) ∖ {∅}) ∣ (♯‘𝑥) ≤ 2} ∧ {𝑥 ∈ (𝒫 (Vtx‘𝐺) ∖ {∅}) ∣ (♯‘𝑥) ≤ 2} ⊆ (𝒫 (Vtx‘𝐺) ∖ {∅})) → (iEdg‘𝐺):dom (iEdg‘𝐺)⟶1-1(𝒫 (Vtx‘𝐺) ∖ {∅}))
6	4, 5	mpan2 704	. . . 4 ⊢ ((iEdg‘𝐺):dom (iEdg‘𝐺)⟶1-1{𝑥 ∈ (𝒫 (Vtx‘𝐺) ∖ {∅}) ∣ (♯‘𝑥) ≤ 2} → (iEdg‘𝐺):dom (iEdg‘𝐺)⟶1-1(𝒫 (Vtx‘𝐺) ∖ {∅}))
7	3, 6	biimtrdi 256	. . 3 ⊢ (𝐺 ∈ USPGraph → (𝐺 ∈ USPGraph → (iEdg‘𝐺):dom (iEdg‘𝐺)⟶1-1(𝒫 (Vtx‘𝐺) ∖ {∅})))
8	1, 2	isushgr 29672	. . 3 ⊢ (𝐺 ∈ USPGraph → (𝐺 ∈ USHGraph ↔ (iEdg‘𝐺):dom (iEdg‘𝐺)⟶1-1(𝒫 (Vtx‘𝐺) ∖ {∅})))
9	7, 8	sylibrd 262	. 2 ⊢ (𝐺 ∈ USPGraph → (𝐺 ∈ USPGraph → 𝐺 ∈ USHGraph))
10	9	pm2.43i 53	1 ⊢ (𝐺 ∈ USPGraph → 𝐺 ∈ USHGraph)

This proof depends on syntax axioms:   → wi 4   ∈ wcel 2147  {crab 3416   ⊆ wss 3900   ∖ cdif 4048  ∅c0 4281  𝒫 cpw 4560  {csn 4588   class class class wbr 5106  dom cdm 5656  ⟶1-1wf1 6558  ‘cfv 6561   ≤ cle 11374  2c2 12427  ♯chash 14504  Vtxcvtx 29607  iEdgciedg 29608  USHGraphcushgr 29668  USPGraphcuspgr 29762

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-ext 2735  ax-nul 5264

This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2102  df-clab 2742  df-cleq 2755  df-clel 2839  df-ne 2960  df-rab 3417  df-v 3456  df-sbc 3743  df-ss 3901  df-dif 4050  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-br 5107  df-opab 5172  df-rel 5663  df-cnv 5664  df-co 5665  df-dm 5666  df-rn 5667  df-iota 6515  df-fun 6563  df-fn 6564  df-f 6565  df-f1 6566  df-fv 6569  df-ushgr 29670  df-uspgr 29764

This theorem is used by:  uspgrupgrushgr  29793  usgredgedg  29844  vtxdusgrfvedg  30105  1loopgrvd2  30117  isubgr3stgr  49288